| Massachusetts State Locator Citys, Towns, Villages, and Other beginning with the letter O |
| CITY/TOWN/ VILLAGE/ETC. |
LOCATED IN THIS TOWN |
COUNTY | STATE |
| Oak Bluffs | Oak Bluffs | Dukes | Nassachusetts |
| Oakdale | Holyoke | Hampden | Massachusetts |
| Oakdale | Dedham | Norfolk | Massachusetts |
| Oak Grove | Malden | Middlesex | Massachusetts |
| Oakham | Oakham | Worcester | Massachusetts |
| Oak Hill | Worcester | Worcester | Massachusetts |
| Oak Island | Revere | Suffolk | Massachusetts |
| Oakland | Taunton | Bristol | Massachussetts |
| Oakland Heights | Worcester | Worcester | Massachusetts |
| Oaklands | Lowell | Middlesex | Massachusetts |
| Oakland Square | Pembroke | Plymouth | Massachusetts |
| Oakland Vale | Saugus | Essex | Massachusetts |
| O'Briens Corner | Agawam | Hampden | Massachusetts |
| Ocean Grove | Swansea | Bristol | Massachussetts |
| Ocean Heights | Edgartown | Dukes | Nassachusetts |
| Ocean View | Rockport | Essex | Massachusetts |
| Oklahoma Heights | Tisbury | Dukes | Nassachusetts |
| Old City | Townsend | Middlesex | Massachusetts |
| Old Common | Millbury | Worcester | Massachusetts |
| Old Furnace | Hardwick | Worcester | Massachusetts |
| Old Griss Mill | Chatham | Barnstable | Massachusetts |
| Oldham Pines | Pembroke | Plymouth | Massachusetts |
| Oldham Village | Pembroke | Plymouth | Massachusetts |
| Old Hill | Springfield | Hampden | Massachusetts |
| Old Silver Beach | Falmouth | Barnstable | Massachusetts |
| Old Town | North Attleborough | Bristol | Massachussetts |
| Onset | Wareham | Plymouth | Massachusetts |
| Orange | Orange | Franklin | Massachusetts |
| Orleans | Orleans | Barnstable | Massachusetts |
| Orooks Corner | Bellingham | Norfolk | Massachusetts |
| Otis | Otis | Berkshire | Massachusetts |
| Otis Ridge Ski Area | Otis | Berkshire | Massachusetts |
| Osterville | Barnstable | Barnstable | Massachusetts |
| Otter River | Templeton | Worcester | Massachusetts |
| Overbrook | Wellesley | Norfolk | Massachusetts |
| Oxford | Fairhaven | Bristol | Massachussetts |
| Oxford | Oxford | Worcester | Massachusetts |
| Oxford Heights | Oxford | Worcester | Massachusetts |
| Oyster Harbors | Barnstable | Barnstable | Massachusetts |